Photoluminescent materials and associated process and infrared s

Details Photoluminescent materials and associated process and infrared s Photoluminescent materials and associated process and infrared s

1986-06-05

1989-05-16

Lusignan, Michael

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 64, 25230145, 2523014H, 2503272, B05D 506, C09K 1108, G03G 516

Patent

active

048308757

ABSTRACT:
Photoluminescent materials useful for detection of infrared light are constructed using a base material of strontium sulfide. Barium sulfate is used to increase brightness of output light of the materials, whereas lithium floride is used to allow the material to be fused together. Samarium and either cerium oxide or europium oxide are used in specific examples for providing electron traps in the photoluminescent material. An infrared sensing device or card may be constructed using the material. The photoluminescent material is made according to a process involving heating of the material to a fusing point, grinding the material after cooling, and reheating the material to below the fusing temperature. The material is then placed in a transparent binder and applied to a substrate. An alternate process involves applying the components of the photoluminescent material to a substrate of aluminum oxide and fusing the components onto the substrate.

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